#include<iostream>
#include<algorithm>
#include<funtional>
#include<vector>
using namespace std;

int main() {
    double a[] = {1.1,4.4,3.3,2.2};
    vector<double> va(a,a+4),vb(4);
    copy(va.begin(),va.end(),ostream_iterator<double>(cout,""));
    cout << endl;
    return 0;
}
